Global Patent Index - EP 1066681 A1

EP 1066681 A1 2001-01-10 - FEED FORWARD AMPLIFIER

Title (en)

FEED FORWARD AMPLIFIER

Title (de)

VORWÄRTSGEKOPPELTER VERSTÄRKER

Title (fr)

AMPLIFICATEUR A CORRECTION AVAL

Publication

EP 1066681 A1 (EN)

Application

EP 99907737 A

Priority

  • GB 9900696 W
  • GB 9804744 A

Abstract (en)

[origin: WO9945639A1] A feed forward arrangement for linearising a distorting element such as an amplifier. The arrangement has error correction means which produces an error correction signal that is combined with the output signal of the distorting element to produce a corrected output signal. A pilot signal is injected into the distorting element path so as to be processed by the error correction means and the presence of the pilot signal in the corrected output signal is monitored by comparison with the pilot signal so as to produce another error correction signal to adjust the error correction means. The pilot signal is advantageously derived from the distorting element input signal.

IPC 1-7 (main, further and additional classification)

H03F 1/32

IPC 8 full level (invention and additional information)

H03F 1/32 (2006.01)

CPC (invention and additional information)

H03F 1/3235 (2013.01); H03F 1/3247 (2013.01); H03F 1/3258 (2013.01); H03F 2200/438 (2013.01); H03F 2200/57 (2013.01)

Citation (search report)

See references of WO 9945639A1

Designated contracting state (EPC)

DE FI FR SE

EPO simple patent family

WO 9945639 A1 19990910; AU 2737199 A 19990920; CN 1298570 A 20010606; EP 1066681 A1 20010110; GB 9804744 D0 19980429; JP 2002506306 A 20020226; US 6429738 B1 20020806

INPADOC legal status


2004-05-06 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031103

2003-10-15 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ANDREW CORPORATION

2003-08-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030620

2001-01-10 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001004

2001-01-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FI FR SE